Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
Patent
1989-03-01
1990-02-06
Anderson, Harold D.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
528 44, 528335, 528341, 528407, 528408, 528417, 528423, C08G 3302
Patent
active
048989231
ABSTRACT:
A novel class of polymers comprises one or more dipyridinium units, having the formula ##STR1## contained within the main polymer backbone where Ar.sup.1, Ar.sup.2, and Ar.sup.3 are aromatic or heteroaromatic nuclei each of which can consist of one ring or two fused or catenated rings having 5 to 12 ring carbon and heteroatoms which can include 1 to 3 unitary heteroatoms selected from S, N, and O, R.sup.1 is any divalent organic bridging group, and Z.sup..crclbar. is a counterion.
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Heilmann Steven M.
Katritzky Alan R.
Krepski Larry R.
Rasmussen Jerald K.
Tarr Richard D.
Anderson Harold D.
Kirn Walter N.
Minnesota Mining and Manufacturing Company
Sell Donald M.
Sherman Lorraine R.
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